*{
  margin: 0;
  padding: 0;
}
html{
  font-size: 4.26666667vw;
}
.loading{
  width: 20px;
  height: 20px;
  border-left: 2px solid red;
  border-top: 2px solid rgb(255, 62, 62);
  border-right: 2px solid rgb(255, 138, 138);
  border-bottom: 2px solid rgb(255, 206, 206);
  border-radius: 50%;
  animation: loading .3s infinite linear;
}

@keyframes loading {
  0%{
    transform: rotate(0deg);
  }
  100%{
    transform:rotate(360deg);
  }
}